Effect of scan format on refraction artifacts

Ziskin, Marvin C.; LaFollette, Paul S.; Blathras, Kostas; Abraham, V.

doi:10.1016/0301-5629(90)90147-5

Cited by 13 publications

(18 citation statements)

References 14 publications

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“…The geometric distortion of ultrasound images of circular objects has been examined previously [6,7], including by ray models [5,4]. Our analysis extends this previous body of work by quantifying the distortion of area, and thereby providing new insight into the errors in the ultrasonic evaluation of area and volume of anatomical features.…”

Section: Discussionmentioning

confidence: 61%

Geometric distortion of area in medical ultrasound images

Bland¹,

Tong²,

Ward³

et al. 2017

J. Phys.: Conf. Ser.

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Medical ultrasound scanners are typically calibrated to the soft tissue average of 1540 m s −1 . In regions of different sound speed, for example organs and tumours, the B-mode image then becomes a distortion of the true tissue cross-section, due to the misrepresentation of length and refraction. We develop a ray model to predict the geometrical distortion of a general elliptical object with atypical speed of sound, and quantify the ensuing image distortion as a function of the key parameters, including the speed of sound mismatch, the object size and its elongation. Our findings show that the distortion of area can be significant, even for relatively small speed of sound mismatches. Our findings are verified by ultrasound imaging of a test object.

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Section: Discussionmentioning

confidence: 61%

Geometric distortion of area in medical ultrasound images

Bland¹,

Tong²,

Ward³

et al. 2017

J. Phys.: Conf. Ser.

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show abstract

“…They encompass a wide range of US signs and phenomena, including (amongst others) lateral shadowing, the flag sign (signe du drapeau), duplication artifacts, revolving door-like posttumoral distorted vascular images, and the raindrop phenomenon in alcoholic liver cirrhosis. [1][2][3][4][5][6][7][8][9]29 With B-mode imaging, the location of the target is determined by the time taken for the reflective echo of the target to reach the transducer. Usually, there is a simple correspondence between the displayed location on the US image and the actual location of the target.…”

Section: Resultsmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9] However, these investigations have concerned two-dimensional (2-D) US images only, and the whole structure of refractive artifacts is not well understood.…”

Section: Introductionmentioning

confidence: 99%

Analysis of refractive artifacts by reconstructed three-dimensional ultrasound imaging

et al. 2006

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“…Using a computer model and confirming the results with an ultrasound phantom, sector transducers had more prominent retrolenticular afterglow which was accentuated when the rounded structure moved towards the transducer . 21 This effect was not observed with linear array transducers.…”

Section: Acoustic Reflection Andmentioning

confidence: 95%

Imaging Artifacts in Diagnostic Ultrasound—a Review

Kirberger

1995

Vet Radiology Ultrasound

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Imaging artifacts commonly occur during routine ultrasonographic evaluation of patients and contribute to image inaccuracies. These artifacts are classified into artifacts arising from factors controllable prior to imaging or from sound beam interactions within the patient which may result in clinically useful or confusing artifacts. Artifact formation, and how this influences the anatomical image location, echogenicity, size and shape, is described. The clinical interpretation of artifacts is explained in order to gain maximum diagnostic information from an ultrasonographic image.

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Effect of scan format on refraction artifacts

Cited by 13 publications

References 14 publications

Geometric distortion of area in medical ultrasound images

Geometric distortion of area in medical ultrasound images

Analysis of refractive artifacts by reconstructed three-dimensional ultrasound imaging

Imaging Artifacts in Diagnostic Ultrasound—a Review

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